the MBX5 has been with us about a year longer than the 777 so you could be wrong there
Kyosho will probably release a different "edition" of the 777 incorporating any running changes they make, the MP7.5 had 3 different Kanai editions before the model was replaced completely!
if you want the newest of the new then it has to be the TTR S3 as that is the new kid on the block & the car everybody is spanking their monkey over right now